Five thread forms used on translating screws are: A) Buttress, ...

[KWilfred]

Five thread forms used on translating screws are:
 
  A) Buttress, modified square, square, Acme, and stub Acme
  B) Modified square, square, Acme, American National standard and Acme
  C) Acme, Buttress, Whitworth, square and modified square
  D) Square, stub Acme, Acme , Unified and Buttress

Question 2

A long, slender shaft must be turned and threaded with an acme thread. It is too springy to machine without support. What can be used to back up the tool?
 
  A) Compound rest B) Tool rest C) Follower rest D) Steady rest

[alvinum]

Answer to Question 1

A

Answer to Question 2

C

[KWilfred]

Gracias!

[Joy Chen]

TYSM